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Photoshop Lab Color: Ch. 2
[size=+4]Don't Panic![/size] Chapter 2 is a technical explanation of LAB and its relation to the more familiar RGB and CMYK colorspaces. I think the most important thing to keep in mind when you read this chapter is that Dan thinks the actual numbers are more important than you probably need to. Ideally, you'll come away… -
Re: Photoshop Lab Color: Ch. 2
I think that our impasse is more semantic than anything else. One has to acknowledge that the a curve and the b curve merely represent values on a linear scale. So for a given pixel, you add or subtract value from that pixel in a linear way. Thus whether you number it 0 to 255 or make 0 neutral and have it go to -127 to… -
Re: Photoshop Lab Color: Ch. 2
OK Just to add some to this discussion, and you are both right and wrong First of, in LAB, on the most basic level there are 3 channels L,a,b, each channel can have 256 values, no matter what the interface calls them. i.e. the interface, to accomodate us uses 0-100 for L, and (127) - 128 for a and b, but the calculation…
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